Monthly Historical AveragesHarrisburg, IL
Average Temperature
High
20°
Feels 20
Low
8°
Feels 7
Average Precipitation
10 Days
98.3mm
0cm
Content continues below
Daily Historical Averages
S
M
T
W
T
F
S
ForecastMonday, April 13, 2026
Day
28°Feels 29
Wind
29 km/h SW
Gust
44 km/h
Humidity
53%
P.O.P
30%
Night
19°Feels 19
Wind
26 km/h SW
Gust
39 km/h
Humidity
77%
P.O.P
30%
Historical AveragesApr 13
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity